brandsweets

Color

#eff547

#eff547
hex#eff547
rgbrgb(239, 245, 71)
hslhsl(62, 90%, 62%)
oklchoklch(0.936 0.185 111.5)
Closest name: Buttercup Glow (#f1f458)Relative luminance 0.8411
Vivid
Open in palette toolCheck contrast

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →
eff5474d47f5

#4d47f5

Analogous

Open in tool →
eff547f5a44798f547

#f5a447 · #98f547

Triadic

Open in tool →
eff54747eff5f547ef

#47eff5 · #f547ef

Split-complementary

Open in tool →
eff5474798f5a447f5

#4798f5 · #a447f5

Tetradic

Open in tool →
eff54747f5a44d47f5f54798

#47f5a4 · #4d47f5 · #f54798

Contrast

#eff547 as textRatioAAAA largeAAAFix
Aaon white
1.18:1failfailfail
  • AA: use #757906 as the text (4.67:1)
  • AAA: use #595c05 as the text (7.1:1)
  • AA: or shift the background to #6b6b6b (4.52:1)
  • AAA: or shift the background to #4d4d4d (7.17:1)
Aaon black
17.82:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #eff547 as the background.

Brands using this color

mcpConnect your agent — build around #eff547
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

›analyze #eff547 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/eff547-babea2-4e8fdf-272d1f-f1eee9?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md